TY - JOUR
T1 - Growth of double-wall carbon nanotubes with diameter-controlled iron oxide nanoparticles supported on MgO
AU - Ago, Hiroki
AU - Nakamura, Kazuhiro
AU - Imamura, Shingo
AU - Tsuji, Masaharu
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004/6/21
Y1 - 2004/6/21
N2 - We have studied the growth of carbon nanotubes by chemical vapor deposition (CVD) on the nanoparticles of iron oxide with two different diameters, 4 and 10 nm, supported on MgO powder. Both nanoparticles catalyzed the growth of double-wall carbon nanotubes (DWNTs) together with a small amount of single-wall carbon nanotubes (SWNTs). We found that the inner- and outer-diameters of the DWNTs were modified by the initial nanoparticle size; smaller nanoparticles catalyzed the growth of the DWNTs with smaller diameters. These results suggest that the MgO support strongly influence the catalytic activity of nanoparticles by reduction of the catalytically-active size.
AB - We have studied the growth of carbon nanotubes by chemical vapor deposition (CVD) on the nanoparticles of iron oxide with two different diameters, 4 and 10 nm, supported on MgO powder. Both nanoparticles catalyzed the growth of double-wall carbon nanotubes (DWNTs) together with a small amount of single-wall carbon nanotubes (SWNTs). We found that the inner- and outer-diameters of the DWNTs were modified by the initial nanoparticle size; smaller nanoparticles catalyzed the growth of the DWNTs with smaller diameters. These results suggest that the MgO support strongly influence the catalytic activity of nanoparticles by reduction of the catalytically-active size.
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U2 - 10.1016/j.cplett.2004.04.110
DO - 10.1016/j.cplett.2004.04.110
M3 - Article
AN - SCOPUS:2942521389
VL - 391
SP - 308
EP - 313
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -